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02/02/2021 1:36 pm
Topic starter
I have 2007 Lexus is250 RWD 155K miles. Problem with oxygen sensor as it read on OBDII scan. There are 2 sets of sensor, upstream before cat. and downstream. I’ve seen your video replacing sensor on red Lexus. In typical oxygen sensor failure which ones do I need to replace? Thanks Scotty!
3 Answers
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02/02/2021 1:42 pm
Do we get to know the scanner result?
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02/02/2021 3:47 pm
In addition to the code, can you also provide live data/freeze frame data?
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02/02/2021 4:32 pm
Usually the code will hint at which O2 sensor is “bad”.
I recommend switching the sensors. If the code moves, or you get different live data’s it’s probably a bad sensor.
If the code doesn’t move or you get the same live data, it’s probably a bad cat.
